White Light Generation from Emissive Hybrid Nanocrystals CdSe/CdTe/CdS Core/Shell/Shell System
| Autor: | Akeel M. Kadim |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Materials science
business.industry Shell (structure) 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Cadmium telluride photovoltaics 0104 chemical sciences Core shell Nanocrystal White light Optoelectronics 0210 nano-technology business |
| Zdroj: | Nano Hybrids and Composites. 27:1-10 |
| ISSN: | 2297-3400 |
| DOI: | 10.4028/www.scientific.net/nhc.27.1 |
| Popis: | New nanocrystals (NCs) were engineered with a core/shell/shell system consisting of CdSe core/ CdTe shell/ CdS shell. The white light generation mechanism was described depending on mixing colors from the illuminated CdSe/CdTe/CdS core/shell/shell nanocrystals. The color mixed in CdSe/CdTe/CdS core/shell/shell NCs system were used to generate extreme white light when illuminated by InGaN/GaN UV LED (λ=360 nm) the core/shell/shell NCs system tuned the chromaticity coordinates to (0.332, 0.340) and increased the intensity of the emitted white light. The synthesis of the CdSe/CdTe/CdS core/shell/shell NCs were confirmed by SEM, AFM, XRD and photoluminescence (PL) experiments due to create of surface states defects information. This enhancement was recognized to the overlap of emission with the photoluminescence (PL) spectrum of CdSe/CdTe/CdS core/shell/shell NCs which indications to a cold white light generation. Current-voltage (I–V) characteristics indicate that the output current is good compared to the few voltages (6 V) used which give acceptable results to get a generation of white light. |
| Databáze: | OpenAIRE |
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